She is known for being a glamorous diva. But Beyonce shows a very different side of herself in an unearthed vintage video clip in which she gives lessons on playing pool etiquette. In the cute and fun clip, the 30-year-old singer is seen baring her midriff in a bejeweled cropped top and a pair of jeans. And soon enough she does a little booty-shakin’ dance of joy as she emerges – as she predicted – victorious.

Chewing heavily on some gum, the make-up free songstress playfully and cheekily mocks her way through her…